Question

Which of the following is a rational number


`√(15)`

`√(16)`

`√(21)`

`√(22)`
​

Answer 1

The answer will be
Root 16
The second choice

Answer 2

`√(16)`

Explanation:

`√(16) =4* 4`

16 is a perfect square.

This means that you can multiply an integer by itself and obtain 16

The square roots of numbers that are not a perfect square are members of the irrational numbers.